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Car became unresponsible while driving? Brakes unresponsible, motor on, but powerless, few dashboard lights on. Answered

Hi. I own a Hyundai i10 2013. The problem had happened twice, seems to be under the same conditions.
I was driving in a decent highway, in neutral speed. Suddenly, the lights: oil, brake, sterring and alternator on the dashboard got on. The engine was working but if I tried to accelerate it did seems that it loose all power, brakes were unresponsible, like when the motor is off and you try to break. My only way to brake was the handbrake. Sterring (don't remember well... due panic!) was working normally. I did power off the car once and the problem continue, power back off and on and everything came back on normally.
Second time, same thing happened, this time I was not in panic, I was able to see the dashboard again and the same lights were on. Motor on but without power. Brakes not working, only hand brake. This time, the problem disappeared without power off/on the car. difference in time was around couple of months between failures.
I did connect a scanner to the car's computer and ran diagnostics many times, no luck, no errors. I think I must do this while the failure!
Not sure where start looking. Dealer ussusally finds nothing. No similar cases on the web.
I don't want this to happen again, specially if my wife is driving with my childres.
Can somebody help?!!!

Discussions

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Josehf Murchison

3 years ago

I was just watching Failure to Recall on CNBC, GM cars that do what your car did and it was a defective locking mechanism on the ignition switch.

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rickharris

3 years ago

Your brakes will work even with the engine off - It take a LOT more pressure though so really put some effort into pressing the brake peddle. As for the problem i think only a trained mechanic is going to track it down for you.

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Josehf Murchisonrickharris

Answer 3 years ago

That year Hyundai has ABS brakes Rick, if the computer or the sensors are on the fritts, it can stop the brakes from applying no matter how hard you push the peddle.

One thing that might work is to take your foot off the break peddle and then slam your foot down on the peddle as hard as you can. If the computer is working that should bypass the ABS and lock up your wheels.

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rickharrisJosehf Murchison

Answer 3 years ago

I don't know about the US but in the UK all cars are required to have a braking system that no matter what can always be manually operated to some degree. You have to be heavy footed though. The ABS works on top of that system, failure mode is ABS doesn't work but that doesn't stop the brakes.

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Josehf Murchisonrickharris

Answer 3 years ago

Technically our cars have 3 systems 2 controlled by ABS.

And 18 wheeler's have 4 systems one controlled by ABS, the steering axle.

I was going across the Trans Canada #11, (Longest road in the World) when I hit a Moose. The Moose wrack on the front of my truck saved the front of my truck but the ABS light came on. I called dispatch and they told me to continue home they would fix it at the shop. An hour later the truck caught fire and shut down the highway for 8 hours. Because of a damaged sensor one break was applying just enough to heat it until the truck caught fire. A $5,000,000 load up in flames.